Changelog¶

All notable changes to XdTd are documented here. Versions follow a V.R.P (Version.Release.Patch) scheme.

v1.0.55 (2026-05-10)¶

New Features¶

Auto-relocation flag for stiffener reference nodes after the elastic analysis, exposed as a global default and a per-RS-Set toggle (auto-enabled when X+Y stiffening is used)

Bug Fixes¶

BUG-041: single-stiffener configuration produced a panel boundary smaller than the crack

Documentation¶

New User Guide page documenting the mesh discretization rules

v1.0.54 (2026-05-09)¶

New Features¶

Cold-start splash: shown earlier and pumps processEvents through each init step so cold launches give immediate feedback instead of looking frozen
X/Y stiffened-panel orientation: BC load direction now follows crack growth direction (crack in X → load in Y; crack in Y → load in X)
Stiffened-panel creator now builds bonded attachment properties when the reference stiffener is bonded
Y-stiffener spinbox max raised 11 → 16

Bug Fixes¶

Linux comma-decimal locales (pt/de/fr) caused the Fortran solver to parse crack-growth inputs as 0; LC_NUMERIC=C pinned at startup and {:g} formatting applied to solver inputs
Database lookups for attachment properties now swap to the correct class (bonded vs fastened) before query
Stiffener BC graphics now hide when boundary conditions are toggled off

Improvements¶

Coincident attachment markers (overlapping at intersecting stiffeners) now draw the worse status last; stable per-loc-id ordering across animation frames
Code-status legend entries deduplicated in stress/strain visualization
Panel data dialog: Show Node/Element Numbers checkboxes removed; mesh now drawn on demand

Website¶

Downloads form: Institution required (with "I'm an individual" opt-out), Country dropdown via datalist, per-platform install hints inline
Install guide: Smart App Control re-scan note (Windows 11), OneDrive Known Folder Move warning, default user-data path callout
Home page hero block restructured (full-name, tagline, motto, meta, CTAs); new "Designing for Maintenance" video card

v1.0.53 (2026-05-09)¶

Bug Fixes¶

Bonded stiffener mesh joint at the half-half boundary no longer produces a Jacobian sign change in the BEM solver
Crack-growth progression on the crack-side half of bonded stiffeners now starts from the correct end (was meshing at the far end on inverted halves)
Crack-intersection mesh progression now grows outward on both halves of a bonded stiffener

Improvements¶

New StiffenerBoundaryFactor added to refinement levels so the discretization slider properly scales stiffener loose elements

v1.0.52 (2026-05-07)¶

New Features¶

In-app third-party licenses viewer (QWebEngineView dialog) replacing the previous OS-browser delegation which was broken on Linux
Crack-tip failure markers on residual-strength charts using first-failure semantics (smallest-x zero crossing)
Failure annotations (× + vertical line) are now individually toggleable from the chart legend

Bug Fixes¶

Splash screen no longer requests the macOS-only "SF Pro" font

v1.0.51 (2026-04-11)¶

Bug Fixes¶

BUG-039: hide % and Δ toolbar buttons for shape, contour, and 3D outputs (parameterize-incompatible plot types)
BUG-040: SIF vs Kc comparison now uses the denser curve's X grid and interpolates the sparser one, preserving SIF resolution (was collapsing to 2 Kc anchor points)

Improvements¶

IMP-035: parameter selection dialog uses a radio-button group instead of a list widget to make the single-selection semantics visually obvious

Website¶

Refreshed teaser and tutorial video links

v1.0.50 (2026-04-05)¶

Improvements¶

Refreshed splash images

Bug Fixes¶

Reverted Linux settings-dir case-detection that broke launches on case-sensitive filesystems

v1.0.49 (2026-04-05)¶

Improvements¶

Hide %/Δ difference toolbar buttons on grid (side-by-side) comparison charts (difference requires two traces in a single chart)
Blue selection-highlight style applied to the simpler result-set selection dialog launched from the results toolbar compare buttons

Website¶

Video page restructured around the final five tutorial videos with embedded players (Your First Case Study; Working with Stiffeners; Crack Growth with Unknown Growth Direction; Patches & Parametric Study; Settings & Features)

v1.0.48 (2026-04-04)¶

Internal version bump; no user-visible changes.

v1.0.47 (2026-04-04)¶

Improvements¶

Difference charts switched from lollipop stem/marker to line+markers plots, with a bolder zero reference line
Hide Compare Sets buttons on multi-pair and difference charts; hide Δ/parameterization buttons on already-difference charts
Hybrid internal-points grid with boundary ring and crack-disconnection safety margin

Bug Fixes¶

BUG-037: Tile/Cascade was broken on Linux inside the case-study MDI; viewMode now switches to SubWindowView before tileSubWindows()/cascadeSubWindows()
BUG-038: Compare Overlaid hid every trace in the new chart due to a trace-name prefix-separator mismatch
Exported PNG ignored zoom/pan state on contour plots (autorange now disabled when applying captured axis ranges)

Website¶

Benchmark carousels: wrapper height locked to the tallest slide after images load; vertical centering; refreshed screenshots and download zips
Home page teasers updated with new tutorial-video embed

v1.0.46 (2026-04-03)¶

Bug Fixes¶

Fix analysis using wrong boundary condition set when changed in the parameters dialog
Fix Save As dialog snapping back to original directory instead of navigating freely

New Features¶

Dedicated toolbar button for deleting boundary condition sets
Publications page with research papers and BibTeX citation guide

Website¶

SEO: meta descriptions on all pages, OpenGraph/Twitter tags, JSON-LD structured data
FAQ page with 17 questions covering capabilities, analysis method, and tool comparisons
About section updated with Prof. M. H. Aliabadi supervision credit

v1.0.45 (2026-04-03)¶

Bug Fixes¶

Fix false unsaved-changes prompt when opening legacy database files
Fix stiffener stress visualization crash

v1.0.44 (2026-04-01)¶

New Features¶

Virtual segment discretization for improved mesh quality
Website overhaul with benchmarks, support page, and reorganized navigation

Bug Fixes¶

Fix image export producing blank output
Fix comparison dialog crash and preserve trace visibility in overlay mode

v1.0.43 (2026-03-30)¶

Improvements¶

Single-slider mesh refinement control replacing multi-parameter discretization dialog
RS set parameter snapshot captures refinement table values

Bug Fixes¶

Fix boundary proximity filter and solver crack proximity factor alignment
Fix attachment code 7, minimize-tile, toolbar labels, color fallback

v1.0.42 and earlier¶

Highlights¶

Stiffener BCs per BC set — stiffener boundary conditions moved from component-level to per-BC-set, with auto-migration for legacy files
BC set locking — BC sets used in results are hard-locked against edits
Mesh independence — mesh is temporary, parameters_json authoritative, auto-computed crack elements
CSV database tools — import, export, create, and switch material/fastener/bond databases
Chart digitizer — extract data points from chart images
Contour plots — stress filled contours with IQR-based peak clamping, boundary-aware adaptive grids
Undo/redo — property changes, split-all-edges, orphan BC cleanup
Analysis report viewer — detailed log access from the UI
Overlaid comparisons — hierarchical trace styling for multi-RS overlay charts
Stiffened panel creator — automated symmetric panel generation with break-stiffener support
RS set properties reports — side-by-side parameter comparison across result sets
Internal points — advancing front adaptive grid, crack-centered patch grids, boundary proximity filter
PNG/Icons8 icons replaced — runtime-tinted SVGs throughout the UI
Non-modal mesh preview — zoom and pan interaction during preview
Bulk internal point insertion — major mesh generation speedup

Bug Fixes (selected)¶

Scroll zoom snap-back in charts
Topology restore, crack numbering, path alignment
RS chart Y-range regression
Component selection geometry lock warning
File dialog starting directory consistency
Patch attachment boundary points flag
Line contour crash with near-uniform values
Database open performance for large result sets